Check-controlled lock



M. H. RICHARDSON ET AL CHECK CONTROLLED LOCK April-19, 1927; 1,624,980

Filed March 2 1924 5 Sheets-Sheet 1 April l9, 1927.

M. H. RICHARDSON ET AL CHECK CONTROLLED LOCK i F il ed March 26. 1924 s Sheets-Sheet 2 1624 980 April 1927' M. H. RICHARDSON ETA]...

CHECK. CONTROLLED LOCK Filed March 2 1924 5 Sheets-Shoot 3 Do I t w: 4

April 19; 1927.

M. H. RICHARDSON ET AL v CHECK CONTROLLED LOCK 5 Sheets-Shot 4 Filed March 26. 1924 I flm H z T ll x ml 7 4 3 a Q J a v 5 b6 5 5 w 9 4 =5: l

7 f. 5 u I vV|O a a WP mm g Y Imus" v" 1,624, 1927' M. H. RICHARDSON ET AL CHECK CONTROLLED LOCK 5 Sheets-Sheet 5 Filed March 26. 1924 Patented Apr. 19, 1927.

i a r i MYRON I-I. RICHARDSON, O3? CHECELGO, AND ALBERT GEBERE, 9F EVILMETTE, ILLE- lIOXS, ASSIGIIGES "1'0 ADVANCE MACHINE COMPANY, OF CHICAGO, ILLINOIS, A COR- ronarron or ILLINOIS.

CHECK-CONTROLLED LQGK.

Application filed March 26, 192i.

This invention relates to improvements in cheek controlled locks particularly adapted though not necessarily limited in its use on the doors of public toilet rooms, to which admission may be had "re-in the ou side, only upon the payment or deposit 01": a check token of a predetermined character or denoniinatioin the depositing of the check token rendering the lock operable to the per on making the deposit, and through the medium of an operating knob or handle.

A further ebiect is to provide an improved lock of this character in which the check serves as a connecting medium between the o ieratin handle and the lockino' bolt. the check being retained in position while the door w opened and closed until the bolt d 3 coming into contact with an object or the striker, at which time the checkv will be ejected and. the bolt will be disconnected from or rendered inoperable with. respect to the knob or handle on the outside of the door.

The belt is also adapted to be shifted by means of a knob or ha tile on the inside of the door. the inside handle or knob having connected therewith means operating to release certain parts of the mechanism to permit them to be reset and the handle on e outside of the door to be returned to normal position so that another check or token may be oeposited to permit the bolt to be withdrawn by the operation of the le handle.

i'i'irther object is to provide improved whereby the bolt may be operated *m the outside of the door by a k y without rendering; the outside handle or mechanism connected therewith active, and without he ess-itating' the deposit or a check or token.

A urther object is to provide an improved perters key and improved means the swing of the door.

Serial No. 701,955.

To the attainment of these ends and the ieeomplishment of other new and useful 0bects will appear, the invention consists n the "features of novelty in substantially the construction, combination and arrange- .ent of the several parts hereinafter more tully described and claimed, and shown in the accompanying drawings illustrating this invention, and in which Figure l is a front elevation of the lock showing one term of striker plate for the bolt.

Figure 2 is a detail view similar to Figure 1 showing); another form of striker plate or stop for the bolt.

Figure 3 is a detail sectional view taken on line 3-3. Figure 2.

Figure 4 is an elevation of parts of the lock and as taken from the rear part being in section, and showing the parts in the positions which they assume after the deposit of a check and the operation of the handle just prior to the time of retracting the bolt.

Figure 5 is a view similar to Figure 4, showing the parts in their normal positions.

Figure 6 is a detail view partly in section of the check receptacle.

Figure 7 is a sectional view taken on line 7?, Figure 5.

Figure 8 a sectional view taken on line S--8. Figure 10.

l igure 9 a ectional view taken on line 9 -9, Figure 10.

Fig e 10 is a view similar to Figure 4, with parts omitted the sake of clearness, showing the posi ion ie parts will assume when the bolt is retracted by the knob or handle on the front of the lock.

Figure 11 is a view similar to Figure 2, showing the position the parts will assume when the bolt is retracted by the handle on the inside of the lock.

Figure 12 is a detailed elevation of the sup orting member or plate for the parts of the lock.

Figure 13 is a detail vertical sectional view of portion of the lock showing the manner in which the porters key is insei ted.

Figure 1% is a view similar to F igure 13, showing the position the parts will assume when the key is further inserted.

Figure 15 is a view similar to Figure 13,

showing the key further inserted and in position to retract the bolt.

Figure 16 is an enlarged detailed elevation of a portion of the plate shown in Figure 12, showing the manner of ejecting the check.

Figure 17 is a view similar to Figure 4, showing a modified form of the invention and showing the parts in the position which they will assume after the outside handle has been operated and just prior to the time of retracting the bolt.

Figure 18 is a view similar to Figure 17, showing the position the parts will assume when the bolt is retracted by the outside handle.

Figure 19 is a View similar to Figure 17, showing the position the parts will assume when the bolt is retracted by the operation of the inside handle.

Figure 20 is a detail perspective view of the cylinder and cams shown in Figures 4 and by means of which the parts are operated through the medium of the inside handle.

Figure 21. is a detail perspective view of the lever shown in Figures 4 and 5, which operates upon the bolt through the medium of the check to retract the bolt.

Figure 252 is a detail perspective view of the form of bolt shown in Figures 4, 5, and 11, the bolt being inverted.

Figure 23 is a perspective view of the form of bolt used in connection with the form of the invention shown in Figures 17 and 18 and ith the bolt inverted.

Figure 24 is a detail perspective view of the cylinder for the porters key.

Figure 25 is a detail sectional view of another form of bolt and striker therefor.

Refer 'ing more particularly to the drawings the numeral 24 designates generally a casing, within which the lock is arranged. The casing is preferably divided by means of wall 25 to form a lock compartment and a compartment 26, which latter is open at its bottom at 27 to receive a recep tacle 28, into which the checks are do osited. This check receptacle as well as the compartment 26 are preferably angular in cross section and the receptacle is open at its top and provided with an inwardly projecting flange 29 on the opposite walls thereof, a handle 30 being provided for the in sertion and removal of the receptacle.

Arranged within the lock compartment is a plate or supporting member 31., which may be of any desired size and configuration to fit within the compartment and to support the parts of the locle the plate being preferably removably secured in position by means of fastening screws 32 so that the plate, together with all of the mechanisms supported thereby, may be removed through one face of the casing which is preferably left open, together with all of the supported parts of the lock. The open face of the lock is closed by means of a closure 33, upon which the lock is secured in any desired or suitable manner.

Pivotally mounted upon the plate 31 and intermediate its ends as at 34 is :1V lever 35, one end of which is shaped to form a hook 236 having a beveled surface 87. The other end 38 of the lever preferably terminates adjacent the top of the casing 24., as shown more clearly in Figure 4. A lock 39 is secured to the top of the casing and is provided with a bolt 40 adapted to be manipulated by means of a key (not shown) and the bolt when shot will engage the end 38 of the lever and rock the same about its pivot 84 against the stress of the spring 41 to move the hooked end 36 of the lever into the position shown in Figure 4, and when the bolt is retracted the spring 41 will return the hooked end 36 of the lever to the position shown in Figure 5. In this position of the lever, the receptacle 28 is adapted to be inserted into the open end of the casing 24, so that the flange on the receptacle in either position. in which the receptacle may be inserted, will engage the beveled face 37 of the lever and the lever will snap into position for locking the receptacle against removal. When it is desired to remove the receptacle the bolt is operated as above described.

The parts of the lock proper are mounted upon the supporting plate 31 and embody a locking bolt 42 slidably mounted in suitable guides the extremity thereof being beveled as at 43 and the beveled extremity is normally held projected beyond the casing 24, preferably 3y means of a suitable spring 44, one end of which is anchored to a pin or projection 45 carried by the bolt and the other end is connected to a fixed anchor 46, the normal tendency of the spring 44 being to project the end 43 of the bolt beyond the casing and against the stress of which spring the bolt is adapted to be retracted.

Fivotally mounted upon the supporting plate 31 and intermediate its ends as at 47 is a lever 48, one extremity of which is deflected as at 49 and is adapted to extend beneath the bolt 42 and preferably through a cut away portion 50. A spring 51 is an chored. by one extremity to a projection 52 on the lever 48, and by its other extremity to a fixed support and tends normally to move the lever 48 in a direction about its pivot so that the end 49 will engage a suitable stop 48 to prevent the deflected portion of the lever engaging the bolt. The free end 53 of the lever is arranged in the path of movement of a projection 54 carried by one arm of a bell crank lever 55, the other arm 56 of the bell crank lever being adapted when the lever is in a predetermined position to engage a stop 57 to arrest the movement of the bell crank lever in one direction. I v

A spring 58 isprovided and connected with the bell crank lever and also with the fixed support, and tends to move the bell cranklever in a direction to reuse it to assume its norn'ia'l position as shown in Figure 5, and against the stress of which spring 58, the bell crank lever is moved to the position shown in Figure 4, in a manner to be hereinafter set forth.

Pivotally mounted also upon the supporting plate 31 as at 59 is another lever 60, a portion 61 of which is adapted to stand in proximity to the end 53 of the lever 48 and within the path of movement oi the projec tion 54 on the bell crank lever 55, to be engaged by the projection 54 so that the lever 60 will be rocked against the stress of a spring 62. The extremity 61 of the lever 60 yields to permit the arojection 54 to pass so to engage the end 58 of the lever 48 to rock the latter against the stress or" the spring 51 into the position shown in Fig are-10 lVhen the bell crank lever 55 is returned by the spring the projection 54 will abut the extremity of the portion 61 ot the lever 60 and the spring 51 will move the lever 48 until the parts assume the position shown in Figure This will arrest the return or retrograde movement of the lever 55 and maintain the lever 55 locked against the stress of the spring 58. The lever 60 is also provided with a surface 63 adapted to be engaged by a cam or projection 64 carried by a rotatable member 65, and which latter is also rotatably supported by the supporting plate 3].. The member 65 is also provided with a cam or projection 66 adapted to engage a lug or projection 67 carried by the bolt 42. The member 65 is mounted for tree rotation so as not to interfere with the operation of the bolt independently thereof or the operation of any of the other parts the mechanism.

It will thus be seen that with the parts in the normal position shown in Figure 5, when the bell crank lever 55 is rotated against the stress of the spring 58, the projection 54 will engage the portion 61 ot' the lever 60 to rock the latter to permit the projection to pass, after which the spring 62 will move the extremity of the portion 61 oi the lever 60 into the path of retrograde movement of the projection 54. A further advancing movement of the projection 54 will cause it to engage the end ot the lever 48 and rock the latter against the stress of the spring 51, the'defiected end 49 of the lever 48 being adapted to be freely moved in the cut away portion 50 of the bolt 42 and the bolt will be retracted, in a man ner to be presently described, When the bell crank lever 55 is then released the spring 58 will cause the projection 54 to abut the end of the portion 61 of the lever 60 and the lever 48 will be moved by the stress of the spring 51 so that these parts will assume the positions shown in Figure The bolt 42 will then be projected and it will be readily seen that by a rotation of the member (55 the cam or projection 64 will engage the surface 63 ot the lever (30 and move the latter so as to move the extremity of the portion 61 out of the path of the return movement of the projection 54 or out of engagement 'withsaid projection, the end oi the portion 61 being rounded so as to permit such movement. When the projection 54 is released, the spring 58 will immediately return the bell crank lever to its normal position or until a portion of the arm 56 engages the stop as shown in Figure 5. As the member 65 is thus moved the cam or projection 66 will engage the projection 67 on the bolt 42 and retract the latter against t 1e stress of th spring 44. 'Vhen the member 65 is released the spring 62 will move the element 60 about its pivot 59, causing the surface (33 to rotate the eleinent 65 back to its normal position'through the medium of a projection 64 which is engaged by the surface 63. As the projection 86 is returned the spring 44 will project ire bolt '42 and this spring 44 will also assist in rotating the member 65.

The member 65 is rotated in any desired or suitable manner but preferably through the medium of a, knob or handle 68 located on the inside of the door or support to which the lock casing 24 is connected, as shown more clearly in Figure 8.

The bell crank lever is adapted to be operated by means of a knob or handle 69 located on the front of the casing 24, through the medium of a token 72 adapted to be inserted into a casing through a slot 71. The check inserted through a receiving slot having a discharge outlet 78 adapted to deliver the check into an opening or guideway 74 see Figures 8 and 12) of the supporting plate 31 and the cheer-t is arrested in its inserting movement by means of a stop or support 75. hen the check is delivered to the support or rest 7 5, it will stand between two spaced projections 76 and 77 carried by the bolt 42 (see also Figure 4), the projections 76 and 77 being spaced from. each other for a distance somewhat greater than the largest diameter of the check 72. The projection 7 7 is preterably disposed in proximity to one edge of the lateral projecting portion 4a 01 the lever 48 and preiterabh tl'ierealiiove. The edge otth'e portion 49 of the lever 48 which is in proximity to and which is adapted to engage the edge or the check 72, co-operates with the projection 78 onthe bolt 42 so that when the lever 48 is rocked from the position shown in Figure 5 to the position shown in Figure 4, when the check 72 is in position upon the rest 75, the portion 49 will engage the edge of the check below the greatest diameter of the check and will through the medium of the check exert a pressure upon the projection 76 on the bolt 42 to retract the latter against the stress of the spring 44. The engagement of the edge of the portion 49 of the lever 48 being below the greatest diameter of the check, it will be manifest that the check will be retained in position although it will be shifted or moved from the support 75, the projection 76 and the edge of the deflected portion 49 of the lever 48 serving to sustain the check. When, however, the bolt 42 is retracted by means of the operation of the member 65, and through the medium of the projection 66 and projection 67 on the bolt, the lever 48 will not operate but will remain stationary and the projection 77 on the bolt 42 will then move into engagement with the edge of check 72 and cause the check to be shifted. from its seat or support 75 to release the check and thereby permit it to drop down into the check receptacle 28. This operation of the bolt independently of the handles 69 and 68 is caused when the beveled surface 43 of the bolt engages the strike plate 78 (see Figure 3) during the closing operation of the door. The tension of the spring 44 also serves to hold the projection 7 6 against the edge of the check when seated upon the support 7 5.

After the bolt has been again projected and the door has been closed, the bell crank lever 55, which has been operated during the rotation of the handle 69, to permit the check 72 to be deposited upon the support 75, will be retained in its locked position, or in the position shown in Figure 4 and the insertion and operation of the lock by means of another check will be prevented until the bolt 42 is again retracted from the inside of the door through the medium of the handle 68. "When this handle is operated the member 65 will be rotated to rock the lever 60 to move the end 61 thereof out of the path of return movement of the projection 54 to permit the spring 58 to return the bell crank lever to the position shown in Figure 5, and the projection 66 on the member 65 will engage the projection 67 on the bolt 42 and retract the latter. After the member 65 is released the spring 44 will again project the bolt 42 and when the door is closed with the parts in this position or in the position shown in Figure 5, the bolt 42 when the end 43 thereof engages the strike plate 78 will be retracted independently of the handles 68 and 69 and the mechanisms connected therewith, and the door will be again locked.

If desired and as a means for indicating the number of operations of the lock, there may be provided a registering mechanism diagrammatically illustrated as at 79, having a spring controlled lever 80, a portion of which is arranged within the path of move ment of a deflected portion or extremity 81 on the arm 56 of the bell crank lever 55, so that each time the bell crank lever 55 is moved from the position shown in Figure 5 to the position shown in Figure 4, the registering or recording mechanism 79 will be operated.

It has been found in practice that all doors upon which locks of this character are to be employed do not always swing in the same direction or manner, that is to say some doors swing outwardly from the right or left-hand side and other doors swing inwardly from the right or left-hand side.

With the form of the invention so far described the lock has been disclosed for use in connection with a door which is hinged upon the right hand side to swing outwardly.

In order to adapt the lock for doors which swing in other directions, it is necessary to arrange the beveled surface 43 of the bolt in a different position with respect to the lock and in that event the operating end of the bolt will be projected from the opposite side of the casing. In order to compensate these differences there'is shown in Figures 17 and 18, a modified form of the lock. The bell crank lever 55 and the lever 60 will be of the same construction as shown in Figures 4 and 5, and will operate in the same manner. The bolt 82, however, will be provided with projections 83 and 84, similar to and for the same purpose as the projections 76 and 77 of the bolt 42, extending from one face of the bolt. A projection will be provided on the opposite face of the bolt 82 and this projection 85 will be engaged by a bifurcated extremity 86 of a lever 87 pivotally supported as at 88 upon the supporting plate 31. A lever 89 is also pivotally supported by the pivot 88 and corresponds with the lever 48. The end of the lever 89 is deflected as at 90 to correspond with the deflected portion 49 of the lever 48 and has the same function. The lever 89 is provided with a surface 91 which is adapted to be engaged by the projection 54 on the bell crank lever 55 and serves the same function as the end 53 of the lever 48, that is through the medium of this surface 91 the lever 89 is rocked about its pivot 88 when engaged by the projection 54 of the bell crank lever 55. A spring 92 is connected as at 93 with the lever 89 and is anchored to a fixed support 94. This spring 92 tends normally to move the surface 91 of the lever 89 into the path of movement of the projection 54 of the bell crank lever 55.

The lever 87 is provided with a surface 95 and a surface 96. In this form of the invention a rotatable member 97 is provided in lieu of the form of rotatabe member shown in Figures 4 and 5'). The member 97 is provided with a cam or pr jection 98, a cam or projection 99, and a cam or projection 100.

In operation when the check is delivered into the mechanism so as to rest upon the support .75, the same as in the form shown in Figures 1 and 5, the check will stand between the projections 83 and 84 and also between the projection 83 and the adjacent edge of the laterally projected portion 90 of the lever 89, when released by the check controlled mechanism. Just as the check is deposited upon the seat 75, the parts will assume the position shown in Fig ure 17 in full lines, that is the projection 5i on the bell crank lever will be in en gagement with the surface 91 of the lever 89 and the end of the portion 61 of the 'ever 60 will be within the path of the r turn movement of the projection 54. A further movement of the bell crank lever from the position shown in full lines in Figure '17 to that shown in Figure 18, will cause the projection 54: to ride over the surface 91 of the lever 89 and rock the latter about its pivot 88, thereby through its movement causing the lever 89 to retract the bo t 82 through the medium of the check 72. Vi hen the handle 69 is released the bolt 82 will be projected by a spring 101 co responding with the spring t l and the parts will assume the positions shown in Figure 17. The bolt 82 will be capalfe of an in dependent mo ement when the beveled surface 102 thereof engages the strike plate, in a similar manner as in the form of the invention shown in Figures 1 and 5.

Vl hen, how ver, the member 97 is rotr ed by the handle 68 the proje ion 98 will er ige the surface 63 of the lever 50 to release the bell cranl: lever and the pro- 99 on the member 97 will engage the ace 97 of the lever 87 to rock the latter aoout its pivot and through the medium of the pin or projection and the bifurcated portion 86 of the lever 87, the bolt 82 will retracted against the stress of the spring 101.

,Vhen the handle 68 is released the member 97 wi l be returned to its normal position through the medium of the spring 62. which returns the element 00, and the spri g 92 which returns the element 96. The surface 89 with which the projection 100 on the member 97 (Bo-operates. serves as a stop for limiting the movement of the member 97 in one direction.

If desired a projection 103 may be provided on the bolt 82 to serve as a guide for one end of the bolt.

It will therefore be manifest that with both forms of this invention the bolt may be retracted from the outside by operating the handle .69 after the insertion of a check or tolren of a predetermined character and nature, and may also be retracted from the inside through the medium of the handle 08 and independently with respect to the operation of the handle 69.

Furthermore when the bolt is retracted by the handle 68 from the inside of the door the check will be ejected or released in the event that the door is not closer, after the insertion of the check.

Furthermore, after the check is inserted and the door is closed before the operation of the handle 68, the bo t will be retracted by the engagement of the end of the bolt with the strike plate and the check will be ejected so that the door cannot be opened only through the operation of the handle 68 and from the inside of the lock.

The outside handle is provided on its face with a visual signal 10 1 preferably in the form of a word designating whether or not the compartment which the door closes is occupied or not. In the event that the compartment is not occupied the signal or indication 104c will be in a proper position to be read from the front of the lock. After the handle has been operated and the compartment is in use thesignal or indication .101: will be inverted or shifted from a normal reading position to an improper reading position.

With the form of strike plate 7 8 shown in Figure 3, there may be provided a flange 105 (see Figure 3) which overhangs the adjacent edge of the lock casin Qeland prevents the retraction of the bolt by the insertion of an implement between the edge of the lock casing and the strike plate;

The form of strike plate 106, shown in ire 1. is adapted for use with the forms the invention shown in Figures 4 and Means may be provided whereby the bolt may be retracted without necessitating the insertion of a check and through the medium of a porters key designated generally by the reference numeral 10. (see particularly Figures 1 :2, 13, 1 1 and 15).

The front wall of the loci; casing is pro vided' with a slot 108 (see also Figure 1') and the supporting plate 81 is provided with a recess 109 adapted to receive and hold a rotatable cylinder 110. This cylinder is pro: vided with a slot 111 extending lengthwise thereof and opening through the end of the cylinder and laterally through the side thereof. The supporting plate 31 is pro: vided with a slot 112, with which the slot 111 is adapted to be brought into register and the supporting plate 31 is preferabl recessed or cut away as at 113 adjacent the wall of the lock casin containin the slot lie 108. The bolt 42 is movable against the face of the supporting plate 31 opposite to the face in which the recess 113 is arranged and the bolt is provided with a recess 11% also Figure 22) which is adapted to receive a finger 115 on the key 107.

The slots 108 and 112 are arranged out oi alinement with each other and at an angle with respect to each other.

In order to insert the key 107 the cylinder 110 is moved so that the end of the slot 111 will be in register with the slot 108 as shown in Figure 13. This will permit the partial insertion, of the key 107 and the key may be inserted until the edge oi? the linger 115 moves beyond the inner face of the wall of the lock casing in which the slot 108 is arranged, but another edge of the linger vill engage the face of the cut away or recessed portion 113 in the supporting plate 31 and will arrest the "further insertion of the key. By rotating the hey, however, the cylinder 1 0 will also be rotated and the portion ot tl e slot 111 which opens through the lateral or side face of the cylinder may be brought into register .with the slot 112 in the supporting plate 31 (as shown in Figure 14-). In this positionit will be manifest that the key may be further inserted into the cylin der 110 by reason of the fact that the linger 115 will then pass through the slot 112. The key may be limited in its inserting movement through the slot 112, either by means of a shoulder 116 on the key or by reason of the end of the key engaging a stop or support 117 as shown in Figure 15. The linger 115 is moved entirely through the slot 112 and beyond the end of the cylinder 110 and in which position it may be rotated so that the end 01 the finger 115 will enter the recess 114 in the bolt 12 to retract the latter. The key may be removed by reversing the operation.

If desired the support 117 may be provided with an opening 118 to receive the era tremity 119 of the key 107 for supporting the latter.

The members and 07 are hollow and respectively slotted as at 65 and 97 for the reception of the cross pin 68 which is loosely carried by the end of the handle 68. This end of the handle is inserted in the end of the member 65 or 97 so that the pin will enter the respective slots 65 and 97 and the pin is held against displacement with respect to the handle 68, by means of a loose collar 65 and 97 carried by the respective elements 65 and 97 and which collar closes the ends of the respective slots. As shown in Figure 25, the striker 120 may be provided with a beveled or rounded surface to be engaged by the end of the belt 121 and which end 122 may be rounded. This provides a means whereby the same bolt may be used on doors regardless'ot the direction they may swing.

lVhile the preferred :iorms of the invention have been herein shown and described it is to be understood that various changes may be made in the details oi construction and in the combination and arrangement of the several parts, within the scope of the claims, without departing from the spirit of this invention.

What is claimed as new is:

1. A loch oi" the character described enibodying a spring projected locking bolt, a handle, n'ieans for inserting a check, a support for receiving the check, a lever indcpendent of the handle and responsive in its movement to the operation of the said handle, means whereby the lever will act through the check to withdraw the bolt, the said bolt being independent of the handle, and means for releasing the check upon the operation 01 the bolt independently of the said handle.

A loci; of the character described embodying a spring projected locking bolt, a handle, means for inserting a check, a support for receiving the check, a lever responsive in its movement to the movement of the handle in one direction, means whereby when the lever is moved by the said handle it wiil act through the check to withdraw the bolt, means for locking the handle in the position into which it has been moved, the said bolt being independent of the handle, and means for releasing the check when the bolt moved independent of the said handle.

A lock of the character described embodying a spring projected locking belt, a handle. means for inserting a check, a sup port for receiving the check, a lever responsive in its movement to the movement of the handle in one direction, means whereby when the lever is moved by the said handle it will act through the check to withdraw the bolt, means for locking the handle in the position into which it has been moved, the said bolt being independent of the handle, means for releasing the check when the bolt moved independent of the said handle, and means for rendering the said locking means inactive.

a loci: of the character described em- )odying a spring projected locking bolt, a handle, means for inserting a check, a support for receiving the check, lever respon sive in its movement to the movement of the handle in one direction, means whereby when the lever is moved by the said handle it will act through the check to withdraw the bolt. means for locking the handle in the posi ion into which it has been moved, the sale. bolt being independent of the handle, means for releasing the check when the bolt is moved independently of the said handle, and means :"or rendering the said locking means inactive at will and from the side of the lock opposite to the side on which the said handle is located.

5. A loci; of the character described embodying a spring projected locking bolt, a handle, means for inserting a check, a support for receiving the check, a lever responsive in its movement to the movement of the handl in one direction, means whereby when the lever is moved by the handle it will act through the check to withdraw the bolt, means -for locking the handle in the pc, ition into which it has been moved, the. said bolt being independent of: the handle means for releasing the check when the bolt moved independent oi the said handle,

second handle operable independently of he first said handle, and means respons've o the operation of the said second handle tor retracting the bolt and for rendering said locking means inactive. 15. A lock of the character described embodying spring projected locking bolt, a handle, means for inserting a check, a sup port receiving the check, a lever responsive in its ino'ven' ent to the movement of the lle in one direction, means whereby the lever is moved by the said handle t inf act t1rongh the check to Withdraw the bolt, for locking the handle in the position into which it has been moved, the bolt being independent the handle, for releasing; the check when the bolt moved independent ot the said handle,

ins independent of the said handle for f" the bolt and for rendering the for o'cltinq' means inactive, and means uning the handle to its normal locket the character described er 1 projected bolt,

i nserting a check,

v the movement ot the handle and to withdraw the bolt onlv through medium of a check, a second ha die independent .of the first said handle and oper- :ble independently of the first said n ieans Y hdrawing the bolt, the said bolt being ndeper lent of both of the said handles and e bo=t withdrawing mechanisms influenced i the respective handles, and means wherethe said independent withdrawing move 1 ot the will release the check.

A. lock of the character described em- 1 for inserting check. meals con by the movement of the handle and rough the we l; to ii thdraw the as tor locking the ban re against l e movement, a second haLldle inde of the first said handle l operable independentl of the first said means for withdrawing the bolt, the said bolt being independent of bath of the said handles and draw the bolt, means locking tie handle aga nst retrograde movement, a second handle independent of the first said handle and operable independently of the first said means for withdrawing the bolt, said bolt being independent ot both of the said handles and the bolt withdrawing mecha nisms influenced by the respective handles, means whereby the said independent with drawing movement of the bolt will release the check, and means responsive to the operation ot the said second handle for rendering the said locking means inactive,

10. A lock oi"- the character described including a spring projected bolt, a handle, means for inserting a check, means controlled. by the movement of the handle and operable through the check to withdraw the bolt, means for locking the handle against retrograde movement, a second handleindependent of the first said handle a d operable independently of the first said means withdrawing the bolt, said bolt being 5 dependent of both of the said handles l the bolt Withdrawing mechanisms intluenc' by the respective handles. means whereby the said independent withdrawing movement of the bolt will release the check, mes,- r responsive to the operation of the said sec ond handle for rendering the said locking means inactive; and means operating automatically to return the first said handle to its normal position. 7

11 it lock of the character described including a spring projected locking bolt, a handle, means ior inserting a check, a lever independent of and responsive in its move ment to the operation of the handle, means on the bolt and he lever with which. e checl: has engagement so that the lever will act only through the check to withdraw the bolt, a rest with which the check engages g the in position with respect 1 Dreams, the sa d also serv- LO i c' the check in an operative osition with relation thereto as the check is ifted with 'espect to the said rest when w hdrawn, said bolt being an independent movement with withdrawing means, and means said independent movement of wl'l release the check.

12. A look or" the character described including aspring projected locking bolt, a

handle, means for inserting a check, a lever independent of and responsive in its movement to the operation ot the handle, means on the bolt and the lever with which the checl: has engagen'ient so that the lever will act only through the check to withdraw the bolt, a rest with which the check engages or holding the same in position with respect to the said means, the said means also serving to maintain the check in; an operative posh 'tion with relation thereto as the check is shiited with respeit to the said rest when the bolt is withdrawn, said bolt being mounted for an independent movement with respect to its withdrawing means, means wheri'iby the said independent movement of the bolt will release the check, an additional handle independent of the first said handle, and means whereby the bolt will be withdrawn by the operation of the said additional handle.

13. A lock of the character described including a sprii'ig projected locking bolt, a handle, means for inserting a check, a lever responsive in its moven'ient to the operation of the handle, means on the bolt and the lever with which the check has engagement so that the lever will through the check to withdraw the bolt, a rest with which the check engages for holding the same in position with respect to the said means, the said means also serving to maintain the check in an operative position with relation thereto as the check is shifted with respect to the said rest when the bolt is vithdrawn, said bolt being mounted, for an independent movement with respect to its withdrawing means, means whereby the said independentmovemcnt of the bolt will release the check, locking means for the handle, and means independent of the handle for w'thdrawing the bolt when the check is released and for unlocking the said handle.

14. A look of the character described including a spring projected bolt, a shiftable element, and surfaces on the boltand element and between which surfaces a check is positioned whereby the said element when shifted will act through the check to withdraw the bolt, one of the said surfaces engaging the edge of the check to one side of its greatest diameter for sustaining the check in operative position with respect to the said surfaces, said element being responsive in its novement to the operation of the handle, said bolt being mounted for a withdrawing movement independent of the said handle and element, the said surfaces being separated by the last recited movement of the bolt to release the check. 4

15. A lock of the character described including a spring projected bolt, a shiftable element, surfaces on the bolt and element and between which surfaces a check is positioned whereby the said element when shifted will act through the check to withdraw the bolt, one or? the said surfaces engaging the edge of the check to one side of its greate -t t'iiameter for sustaining the check in o l live position with respect to the said sur id element being responsive in its moi cincnt to the operation of the handle, said bolt being mounted. for a withdrawin j movement independent of the said handle and element, the said surfaces lei-rig separated by the last recited movement of the bolt to release the check, and means connected with the bolt ior engaging and ejecting the check when the said surfaces are separated.

16, A lock of the character described including a spring projected locking bolt, two independent means for retracting the bolt and operable from opposite sides of the lock, one oi the first recited means embodying a lever, means whereby the said lever will operate to retract the bolt only through an inserted check, the said bolt being mounted for retracting movement independent ol. both of the first recited retracting means, and means operating to release the said check when the boltis thus independently retracted.

17. A look of the character described including spring projected locking bolt, two independent means for retracting the bolt and operalle from opposite sides 01 the lock, means whereby one of the first said means will operate to retract the bolt only through an inserted check, the said bolt mountel for a retracting movement independentof both of the first recited retracting means, means operating to release the said check when the bolt is thus independently retracted, means for locking against retrograde movement that one of the first said means which co-operates with the check to retract the bolt, and means whereby when the other of the first recited means is operated to retract the said bolt, the said locking means will be rendered inactive.

18. A lock of the character described including a spring projected locking bolt, two independent means for retracting the bolt and operable from opposite sides of the lock, means whereby one of the first said neans will operate to retractthe bolt only through an inserted check, the said bolt be ing mounted for a retracting movement independent of both of the first recited retracting means, means operating to release the said check when the bolt is thus independently retracted, means for locking against retrograde movement that one of the first said means which cooperates with the check to retract the bolt, means whereby when the other of the first recited means is operated to retract the said bolt, the said locking means will be rendered inactive, and

means automatically operating to return to its normal position, the said retracting means which has been thus unlocked.

19. A lock of the character described including a spring projected locking bolt, two independent means for retracting the bolt and operable from opposite sides of the lock one of the first recited means embodying; a lever, means whereby the said lever will operate to retract the bolt only through an inserted check, the said bolt being also adapted for a retracting movement independent of both of the first recited retracting means, means operating to release the said check when the bolt is thus independently retracted, and means permitting the bolt to be retracted independently of the other said retracting means.

In testimony whereof we have signed our names to this specification, on this 21st day of March, A. D. 1924.

MYRON H. RICHARDSON. ALBERT E. GEBERT. 

